I looked it up for you. Fang Hu Ling belongs to Dendrobium candidum, but its composition is different. Polysaccharide, dendrobine and saponin are much higher than ordinary Dendrobium. According to Shennong's herbal book, its effects are nourishing liver yin, soothing the liver and regulating qi, nourishing yin and essence, thickening the stomach, nourishing the five internal organs, calming stomach qi, growing muscles, improving intelligence and relieving spasm, and prolonging life, so it is called "life-saving fairy grass" by the people.

The above is about the function and efficacy of Fang Hu Ling, I hope it will help you!